dixon



3 Sheets-Sheet 2.

Mel) B. M. DIXON.

GAR HEATER.

Patented Nov. 13, 1894.

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(11 0 Model.) 3 Sheets-Sheet 3'.

R. M. DIXON.

GAR HEATER.

No; 528,928; P atentedNov. 13, 1894.

UNlTED STATES PATENT OFFICE.

ROBERT MUNN DIXON, OF EAST ORANGE, NEW JERSEY, ASSIGNOR TO THE SAFETY OAR HEATING AND LIGHTING COMPANY, OF NEW YORK, N. Y.

- CAR-H EATER.

SPECIFICATION forming part of Letters Patent N0. 528,928, dated November 13, 1 894. Application filed October 18, 18 92. Serial No. 449,268. (No model.)

To azz whom it may concern:

Be it known that I, ROBERT MUNN DIXON, of East Orange, county of Essex and State of New Jersey, have invented certain new and useful Improvements in Oar-Heaters, of

which the following is a specification, refer-- en ce being had to the accompanying drawings.

The object of my invention is to produce an improved apparatus for heating a railway coach, or the like, by steam, by which the greatest amount of heat from a heating medium may be utilized; and by which the water of condensation in steam heating pipes is retained while the car is in transit, and may be discharged at will, thereby preventing danger of closure of the drip-cock by freezing, or other causes to which continuously-draining systems are more or less subject.

In the accompanying drawings, Figure l is a top plan view of my apparatus as applied to a car, the car floor being omitted for the sake of clearness. .Fig. 2 is a side elevation of the same, showing a section of the car floor. Fig. 3, is a top plan view'of the mechanism by which the water of condensation is discharged from the apparatus; and Fig. 4:, is an elevation of the same.

Referring to the figures on the drawings, 1 indicates the local radiators of a steam oarheater. They preferably extend endwise of the car, one radiator being provided upon the opposite sides of the car, as illustrated. The radiators are composed of conduits or reservoirs 2, which are preferably two in number for each heater, and located at opposite ends of the car. They preferably consist of sections of large pipe provided with heads or caps 3 and 4 at their opposite ends. The caps may be secured in any suitable manner, as for example by screw-threads.

5 indicates a connecting steam pipe, preferably provided with an expansion loop 6 to accommodate it to expansion and contraction under Varying temperatures. The connecting pipe is united preferably by screw-threads at opposite ends to the opposite caps 3 on the heads of the conduits.

7 indicates an equalizing pipe entered into the opposite heads of the adjacent conduits, so as to bring the interior of the equalizing pipes substantially on a level with the bottom of the conduits. The conduits are supplied with steam from any suitable source, as for example a train pipe 8 communicating, as usual, with aboiler of a locomotive. Not illustrated.

9 indicates train pipe cocks, and 10 an intermediate supply pipe.

11 indicates branch pipes communicating with the intermediate supply pipe, and introduced into the heads of the radiators on the opposite sides of the car, near the top of the perpendicular, to open the cooks in the drain pipes. It is adapted to lie flat in the floor of the car when the cooks are closed, and is preferably incased in a lever box 17 let into the car floor. The box in practice is provided with a cover 18, as illustrated, by reason of which access may be had to the lever, which may form a flush continuation of the floor when the lever is not in use.

19 indicates air cocks of ordinary kind for automatically permitting the exit of air from the steam pipes when the steam is first ad? mitted.

The radiators are preferably set at a slight incline to drain toward the drain pipes.

The operation of my apparatus is as follows: Steam being admitted from the train pipe through the branch pipes into the conduits,

fills the conduits and the connecting pipes and radiates its heat into the car, the air cocks acting in the ordinary manner, as above suggested. As the steam condenses it fills the lower parts of the conduits, maintaining an equal level in each through the equalizing pipe connecting the conduits in each of the radiators. The conduits receive their supply of steam in the upper part, and are united by connecting pipes, also communicating with provided with conduits of larger diameter them near their top. Consequently there is than the steam supply pipe, a connecting 20 provided free steam space within the heaters pipe and an equalizing pipe uniting the conuntil the large conduits are more than half duits, said pipes communicating with the con- 5 filled with water. When that condition has duits on diiferent levels, substantially as and been reached the attendant, by simply lifting for the purposes specified. the lever, can operate the drain cocks and 2. As a part of a car heating apparatus, the 25 empty the radiators of all water of condensacombination with a plurality of reservoirs, tion, after whieh,by depressing the lever and of two connecting pipes united to each of the 10 closing the cooks, the radiators are ready for reservoirs and on different levels, substanoperation as before. tially as set forth.

I do not limit myself to the exact details of In testimony of all which I have hereunto 0 construction herein illustrated and described, subscribed my name. but reserve to myself the right to vary them I 5 at will within the scope of my invention. ROBERT MUNN DIXON What I claim is- Witnesses: 1. In a car heating apparatus, the combi ROBT. P. BROWN,

nation with a steam supply pipe, and a heater OSCAR C. WHITNEY. 

